This invaluable text has been developed to provide students with more background on the applications of electricity and magnetism, particularly with those topics which relate to current research. For example, waveguides (both metal and dielectric) are discussed more thoroughly than in most texts because they are an important laboratory tool and important components of modern communications. In a sense, this book modernizes the topics covered in the typical course on electricity and magnetism. It provides not only solid background for the student who chooses a field which uses techniques requiring knowledge of electricity and magnetism, but also general background for the physics major.